Dog litter box



FIG. 1 is a front view of a dog litter box showing my new design.

FIG. 2 is a back view of the dog litter box.

FIG. 3 is a side view of the dog litter box.

FIG. 4 is a top view of the dog litter box; and,

FIG. 5 is a bottom view of the dog litter box. 

The ornamental design for a dog litter box, as shown and described. 